EP2299749A2 - Einstellen des Strahlungsmusters einer Antenne - Google Patents

Einstellen des Strahlungsmusters einer Antenne Download PDF

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Publication number
EP2299749A2
EP2299749A2 EP10177915A EP10177915A EP2299749A2 EP 2299749 A2 EP2299749 A2 EP 2299749A2 EP 10177915 A EP10177915 A EP 10177915A EP 10177915 A EP10177915 A EP 10177915A EP 2299749 A2 EP2299749 A2 EP 2299749A2
Authority
EP
European Patent Office
Prior art keywords
antenna
user equipments
radiation pattern
proportion
statistical parameter
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP10177915A
Other languages
English (en)
French (fr)
Other versions
EP2299749B1 (de
EP2299749A3 (de
Inventor
Jose Javier García Cabezas
Carlos Orobitg Morin
Francisco Dominguez Romero
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Vodafone Espana SA
Vodafone Group PLC
Original Assignee
Vodafone Espana SA
Vodafone Group PLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Vodafone Espana SA, Vodafone Group PLC filed Critical Vodafone Espana SA
Publication of EP2299749A2 publication Critical patent/EP2299749A2/de
Publication of EP2299749A3 publication Critical patent/EP2299749A3/de
Application granted granted Critical
Publication of EP2299749B1 publication Critical patent/EP2299749B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
    • H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
    • H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
    • H01Q1/246—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for base stations
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
    • H01Q3/005—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using remotely controlled antenna positioning or scanning
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/24—Cell structures
    • H04W16/28—Cell structures using beam steering
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0617—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal for beam forming
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/02—Resource partitioning among network components, e.g. reuse partitioning
    • H04W16/10—Dynamic resource partitioning

Definitions

  • the present invention has its application within the telecommunications sector and, especially, in the industrial area engaged in providing Radio Access Networks (RANs) with elements of cellular infrastructures such as Radio Network Controllers (RNCs) Base Station Controllers (BSCs) and Base Stations or Nodes B for wireless communications systems.
  • RANs Radio Access Networks
  • RNCs Radio Network Controllers
  • BSCs Base Station Controllers
  • Nodes B Base Stations or Nodes B for wireless communications systems.
  • the down-tilt of an antenna 10 is defined as the angle 11 between an imaginary horizontal line 12 traced from the top of the antenna and the direction 13 of the main lobe 14.
  • the antenna can provide coverage in an area located at considerable distance from the base station site; but, there is a risk of having more interference with the rest of base stations, and also there is risk of dropped call due to non-defined neighbour cells.
  • One of the problems in the optimisation task in current networks is how to adjust the down-tilt of the antenna in order to provide an optimum coverage of the area covered by the base station where such antenna is located.
  • US 2006/0239224-A1 discloses a method of configuring a cell of a wireless communication system, in which a base station adjusts its access area so as improve resource utilization. It is dynamic method that responds in real time to traffic fluctuations. So the access area of the base station is adjusted selected on a traffic-based criterion.
  • EP-1307066 discloses a method of optimising the down-tilt angle of the antenna beam based on geometric data relating to the relative positions and orientations of base stations in a cellular network, and also based on measurements reports from mobile stations active with cells served by such base stations.
  • US 2006/0068849-A1 describes a method for controlling interference in CDMA networks which includes adjusting the coverage areas of a cell based on traffic load of the cells.
  • the invention refers to a method of dynamically setting the radiation pattern of a base station antenna according to claim 1, and a network component according to claim 9. Preferred embodiments of the method and network component are defined in the dependent claims.
  • None of the above documents disclose the possibility of optimising the access area of the cell covered by a base station based on a statistical criterion of the number and positions of user equipments served by said base station.
  • the present invention aims to provide an optimum communication service environment by varying the down-tilt angle of the antenna in a base station, based on the statistics positioning of the User Equipments under coverage of such base station.
  • a first aspect of the invention relates to a method for dynamically setting the radiation pattern of an antenna of a base station connected to User Equipments in a cellular telecommunications network, comprising:
  • the radiation pattern is controlled by means of changing the down-tilt angle of the antenna.
  • the radiation pattern can also be controlled by means of changing the azimuth angle of the antenna.
  • the network can obtain the positioning data of the User Equipment through several methods. The more accurate the positioning data of the User Equipments is, the better the optimisation of the radiation pattern will be.
  • said statistical parameter is the proportion or percentile of User Equipments samples outside a pre-established target cell range, and:
  • the method also includes that:
  • Said pre-established target cell range is preferably determined as a function of interferences with neighbour cells.
  • the invention also relates to a network component of a mobile or cellular telecommunications network comprising an antenna and means for changing the radiation pattern of the antenna.
  • the network component further comprises:
  • Said means for changing the radiation pattern of the antenna are preferably configured to control the down-tilt of the antenna.
  • the statistical parameter is the proportion of User Equipments samples outside a pre-established Target Cell Range, and if said proportion is higher than a pre-established value, then the down-tilt angle of the antenna is increased by a predetermined amount; otherwise the down-tilt angle is not changed.
  • Said statistical parameter can be the proportion of User Equipments samples outside a pre-established target cell range, and if said proportion is lower than a pre-established value minus a hysteresis factor, then the down-tilt angle of the antenna is decreased by a predetermined amount; otherwise the down-tilt angle is not changed.
  • Said pre-established target cell range is preferably determined as a function of interferences with neighbour cells.
  • network component is intended to mean a network entity such as a Base Station, a Node B or eNode B of a mobile communications network.
  • UE In 3G networks there are different methods for providing positioning information of the user equipments, UE, such as CellID, CellId+RTT, OTDOA (Observed Time difference of arrival) or AGPS (Assisted GPS).
  • UE such as CellID, CellId+RTT, OTDOA (Observed Time difference of arrival) or AGPS (Assisted GPS).
  • the preferred way of obtaining the position of the User Equipments is the RTT (round-trip time) information, since it can be implemented easily without mobile special support and it is a measurement already done by the system to synchronise the transmission and reception (it is needed to setup the radio link).
  • the user equipment UE can obtain its coordinates, for example, by means of the Galileo system or the Chinese COMPASS which are global positioning systems based on satellites.
  • these positioning systems are not in the 3G network. So in order to get the information it needs, the network needs to request that positioning information to the user equipment UE.
  • This positioning information is obtained by means of any of the above methods. Such positioning information is collected for the different User Equipments located in a cell during a predetermined period of time and stored in a database. The collected information is then statistically processed.
  • such statistical process can take place in the radio network or outside the radio network.
  • the Radio Network Controller 20 collects the positioning information, statistically processes it, and sends the corresponding order to change the down-tilt angle of the antenna 10 directly through the Node B 30.
  • the positioning information of the User Equipment is collected by the O&M (Operation and Maintenance) system 21 and sent to an external computer 22 where these positioning data is statistically processed.
  • Said external computer is connected to the Node B 30, which in turn changes the down-tilt of the antenna according to the processed data.
  • FIG. 4 shows the situation in which, for a specific down-tilt angle in the antenna of a Node B 1, the collected statistical data of the positions of the User Equipment connected to said Node B in the previous days (or any other pre-established period of time) shows that the percentage of User Equipment samples located at a distance to the such Node B 1 higher than a desired Target Cell Range 2 is too high (a rough representation of the distribution of the UE positions is shown by shaded areas d1, d2, d3, d4, d1 being the area with the highest concentration of UE equipments, d2 having a smaller concentration of UE equipments and so forth).
  • the down-tilt angle of the antenna in that Node B is increased, and so the same antenna gives coverage in a narrower area.
  • the following collection of statistical data of the UE positions shows a distribution (shaded portions d1', d2', d3', d4') which is inside the same desired target cell range 2.
  • the value of the Target Cell Range is set taking into account possible interferences with neighbour cells, so as to avoid them.
  • the Maximum Percentile is the maximum % of samples that are allowed to be out of the desired Target Cell Range, and it is also configurable.
  • StepUp is the number of degrees the down-tilt angle is increased.
  • StepDown is the number of degrees the down-tilt angle is decreased.
  • StepUp and StepDown are configurable parameters.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
EP10177915.5A 2009-09-22 2010-09-21 Einstellen des Strahlungsmusters einer Antenne Not-in-force EP2299749B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES200930717A ES2382794B1 (es) 2009-09-22 2009-09-22 Metodo para establecer dinamicamente el patron de radiacion de una antena basado en informacion de posicionamiento de equipos de usuario

Publications (3)

Publication Number Publication Date
EP2299749A2 true EP2299749A2 (de) 2011-03-23
EP2299749A3 EP2299749A3 (de) 2014-10-01
EP2299749B1 EP2299749B1 (de) 2015-11-25

Family

ID=43334675

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10177915.5A Not-in-force EP2299749B1 (de) 2009-09-22 2010-09-21 Einstellen des Strahlungsmusters einer Antenne

Country Status (3)

Country Link
US (1) US8447360B2 (de)
EP (1) EP2299749B1 (de)
ES (1) ES2382794B1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102946586A (zh) * 2012-11-08 2013-02-27 中兴通讯股份有限公司 基于位置信息的接入网络信息通知、接入方法及装置
EP2709394A4 (de) * 2011-06-09 2014-03-19 Huawei Tech Co Ltd Verfahren und vorrichtung zur verarbeitung einer interferenz zwischen zellen

Families Citing this family (9)

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Publication number Priority date Publication date Assignee Title
WO2013170226A1 (en) * 2012-05-10 2013-11-14 Eden Rock Communications, Llc Method and system for auditing and correcting cellular antenna coverage patterns
KR20140148229A (ko) * 2013-06-21 2014-12-31 삼성전자주식회사 무선 통신 시스템에서 안테나 제어 방법 및 장치
WO2015187130A1 (en) * 2014-06-03 2015-12-10 Hitachi, Ltd. Adaptive antenna response at the ue for lte-advanced and beyond
EP3427406B1 (de) * 2016-03-23 2020-02-05 Huawei Technologies Co., Ltd. Verfahren und vorrichtung für auf positionsinformationen basierenden downlink-empfangsfilter
CN108615978B (zh) * 2016-12-12 2020-09-25 中国移动通信集团公司 一种天线方向调整方法及装置
CN111328103B (zh) * 2018-12-17 2023-04-11 中国移动通信集团吉林有限公司 一种天线覆盖调整的方法和装置
CN112203226B (zh) * 2019-07-08 2022-11-15 中国移动通信集团浙江有限公司 一种基于用户位置信息的天馈调整方法及装置
US11564130B2 (en) 2020-02-19 2023-01-24 Telefonaktiebolaget Lm Ericsson (Publ) Radio access technology aware cellular network inter-frequency coverage orchestrator
CN113473507B (zh) * 2021-09-06 2022-01-28 中兴通讯股份有限公司 小区优化方法、装置、存储介质和电子装置

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GB2307142A (en) * 1995-11-08 1997-05-14 Motorola Ltd Steering an antenna in accordance with mobile location
WO1998016077A2 (en) * 1996-10-10 1998-04-16 Teratech Corporation Communication system using geographic position data
WO1999060659A1 (en) * 1998-05-15 1999-11-25 Raytheon Company Adaptive antenna pattern control for a multiple access communication system

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2709394A4 (de) * 2011-06-09 2014-03-19 Huawei Tech Co Ltd Verfahren und vorrichtung zur verarbeitung einer interferenz zwischen zellen
EP2709394A1 (de) * 2011-06-09 2014-03-19 Huawei Technologies Co., Ltd Verfahren und vorrichtung zur verarbeitung einer interferenz zwischen zellen
US9565010B2 (en) 2011-06-09 2017-02-07 Huawei Technologies, Co., Ltd. Method and apparatus for handling inter-cell interference
CN102946586A (zh) * 2012-11-08 2013-02-27 中兴通讯股份有限公司 基于位置信息的接入网络信息通知、接入方法及装置

Also Published As

Publication number Publication date
US8447360B2 (en) 2013-05-21
US20110070908A1 (en) 2011-03-24
ES2382794B1 (es) 2013-05-08
EP2299749B1 (de) 2015-11-25
EP2299749A3 (de) 2014-10-01
ES2382794A1 (es) 2012-06-13

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